Density results for Gabor systems associated with periodic subsets of the real line

Density results for Gabor systems associated with periodic subsets of the real line
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与实线周期子集相关的 Gabor 系统的密度结果

DOI:
10.1016/j.jat.2008.08.007
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发表时间:
2009-04-01
影响因子:
0.9
通讯作者:
Li, Yun-Zhang
Li, Yun-Zhang
中科院分区:
数学3区
文献类型:
--
作者:
Gabardo, Jean-Pierre;Li, Yun-Zhang

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对于形式为{e(2 pi imbx)g(x-na)}(m,n是Z的元素)的一维Gabor系统,其中g是L-2(R)的元素,众所周知的密度定理指出,存在这样的系统的一个充分必要条件,其线性跨度在L-2(R)中是稠密的,或者其形成L-2(R)的框架,是密度条件a B
The well-known density theorem for one-dimensional Gabor systems of the form {e(2 pi imbx) g(x - na)}(m,n is an element of Z), where g is an element of L-2(R), states that a necessary and sufficient condition for the existence of such a system whose linear span is dense in L-2(R), or which forms a frame for L-2(R), is that the density condition a b